Wiktionary
unpersuadable
a. Not persuadable.
WordNet
unpersuadable
adj. not susceptible to persuasion [syn: unsuasible]
Usage examples of "unpersuadable".
The unpersuadable point, which he did not mention, Emma guessed to be good behaviour to his father.
Even the wizened, unpersuadable, untrusting Scott was caught up in the wonder of crazy chances for the right reasons.